Please submit manuscripts in either of the following two submission systems

    ScholarOne Manuscripts

  • ScholarOne
  • 勤云稿件系统

  • 登录

Search by Issue

  • 2024 Vol.31
  • 2023 Vol.30
  • 2022 Vol.29
  • 2021 Vol.28
  • 2020 Vol.27
  • 2019 Vol.26
  • 2018 Vol.25
  • 2017 Vol.24
  • 2016 vol.23
  • 2015 vol.22
  • 2014 vol.21
  • 2013 vol.20
  • 2012 vol.19
  • 2011 vol.18
  • 2010 vol.17
  • 2009 vol.16
  • No.1
  • No.2

Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

期刊网站二维码
微信公众号二维码
Related citation:ZHANG Bo-yi,ZHENG Wen-zhong.Experimental research on mechanical properties of prestressed truss concrete composite beam encased with circular steel tube[J].Journal of Harbin Institute Of Technology(New Series),2009,16(3):338-345.DOI:10.11916/j.issn.1005-9113.2009.03.008.
【Print】   【HTML】   【PDF download】   View/Add Comment  Download reader   Close
←Previous|Next→ Back Issue    Advanced Search
This paper has been: browsed 881times   downloaded 547times 本文二维码信息
码上扫一扫!
Shared by: Wechat More
Experimental research on mechanical properties of prestressed truss concrete composite beam encased with circular steel tube
Author NameAffiliation
ZHANG Bo-yi School of Civil Engineering,Harbin Institute of Technology,Harbin 150090 
ZHENG Wen-zhong School of Civil Engineering,Harbin Institute of Technology,Harbin 150090 
Abstract:
Tests of 4 simply supported unbonded prestressed truss concrete composite beams encased with circular steel tube were carried out. It is found that the ratio of the stress increment of the unbonded tendon to that of the tensile steel tube is 0.252 during the using stage,and the average crack space of beams depends on the ratio of the sum of the bottom chord steel tube’s outside diameter and the secondary bottom chord steel tube’s section area to the effective tensile concrete area. The coefficient of uneven crack distribution is 1.68 and the formula for the calculation of crack width is established. Test results indicate that the ultimate stress increment of unbonded tendon in the beams decreases in linearity with the increase of the composite reinforcement index β0. The pure bending region of beams accords with the plane section assumption from loading to failure. The calculation formula of ultimate stress increment of the unbonded tendon and the method to calculate the bearing capacity of normal section of beams have been presented. Besides,the method to calculate the stiffness of this sort of beams is brought forward as well.
Key words:  truss concrete composite beam encased with circular steel tube  bearing capacity of normal section  stiffness  crack width  unbonded prestressed tendon
DOI:10.11916/j.issn.1005-9113.2009.03.008
Clc Number:TU378
Fund:

LINKS